I think one way to have both the white lenses and allowing Ben to emote with his eyes is to blend the mask tight into the eyes with prosthetics and have pure white contact lenses. This could allow the mask to move with his brow, and the closest thing to a cinematic attempt at this are cutscenes from the Arkham Games, instead of being panda eyes.

I have long championed the idea of prosthetics for the cowl, but I'm not sure about the white contacts. Could work, but it wouldn't really provide that iconic "slit" look of the eyes in the comics.

And cool people care about Moon Knight.

__________________"All I really need to know is this: Batman always comes back, bigger and better, shiny and new. Batman never dies. It never ends. It probably never will."